Trap cards

Every deck has cards that read better than they play. These are the ones the community has convicted — buy them and you’re usually 3-20 MC poorer for nothing. The “why” matters more than the list: each trap teaches a pricing rule that spots the next one.

The worst card in the game

Underground Detonations — the community’s one-card bottom tier. Pay 10 MC per activation for 2 heat production, when heat production is worth about 3 MC a step. Triple market rate, repeated by hand, for the least flexible resource, on a track that closes. Never.

The famous noob traps

Card	Why it’s a trap
Hackers	Reads as a 4 MC production swing for 3 MC. Priced honestly (the energy production it eats + the −1 VP), it’s 18-22 MC with a 5-generation payback — the same payback as plain Acquired Company at a third of the cost.
Security Fleet	Looks like a 1-point animal without the requirement. But the activation eats 1 titanium every generation, so you’re paying above market for every point.
Equatorial Magnetizer	Grinds energy production into TR at ~18 MC for the first step, worse after. You burn your engine to buy overpriced points.
Martian Rails	Income per city on Mars — and a two-player board sees maybe 3-4 cities, mostly late. Dead by construction tonight.
Power Infrastructure	Converts the expensive production (energy, 7-8 MC) into the cheap one (MC, ~5). The conversion is backwards on its face.
Soil Factory	Spends an energy production (7-8 MC) to gain a VP (~5 MC). A straight value loss dressed as a combo.
Dust Seals	5 MC all-in for exactly 1 VP and nothing else — pure market rate with an expiry date. Fine drawn free, never worth buying.
Food Factory	Trades plant production — the stuff greeneries are made of — for cash and a point. You want it exactly backwards.
Aquifer Pumping	An engine that turns steel into oceans: a long-game card serving a short-game goal. The expert who ranked all 208 cards: “I haven’t used it a single time in nearly two years.”
Special Design	Only good when you can name the exact card it unlocks right now. Bought on spec, pure cost.

Also in the F drawer: Rad Suits, Micromills, Magnetic Field Dome, Industrial Microbes, Power Grid, Aerobraked Ammonia Asteroid.

The D-tier baits (playable free, rarely worth 3 MC)

• Toll Station — pays off your opponent’s space tags, in the late game, when production is worthless. Worse at two players than anywhere.
• Insulation — exists to win Thermalist. Not winning Thermalist? It’s a blank.
• Ants — needs an opposing microbe target; head-to-head that’s a favor Matthew won’t do you.
• Breathing Filters, Tropical Resort, Caretaker Contract — late-game cards that arrive after their own usefulness.
• Release of Inert Gases and friends — TR at fair-ish rates with nothing else attached; fine, never exciting.

Cards that fall specifically at two players

Anything whose text says “per city” or leans on opponents’ plays: Greenhouses (“comically good” with five players, disappointing with two) · Zeppelins · Immigrant City · Rover Construction · Energy Saving · Underground City · Immigration Shuttles · Toll Station · Martian Rails. Two-player boards stay sparse — count the cities actually likely to exist before buying anything that scales on them.

How to spot the next trap yourself

1. Price the production it eats. Energy production is worth 7-8 MC a step — any card consuming one starts that deep in the hole.
2. Add the 3 MC. Cheap cards with one small effect (Dust Seals, Micromills) are usually exactly market rate — which means zero profit.
3. Check the direction of the conversion. Expensive resource → cheap resource is always wrong (Power Infrastructure, Soil Factory).
4. Count the payback generations honestly — the flashy “pays back in 3” cards usually pay back in 5 once priced fully (Strip Mine, Hackers).
5. “Per city” / “per opponent’s X” clauses get halved at two players.
6. A combo piece without its partner in hand is not a combo — it’s a 3 MC donation (Special Design, Robotic Workforce, Ants).

The meta-rule: traps look like bargains because they hide a cost — the buy fee, the eaten production, the missing partner, the shrinking clock. Price everything, and the deck stops lying to you.